Bound datagridview combobox from another table.

I have a bound VB.net datagrid in my application. I would like to make one of the columns a combobox. Problem is I want to use data in another MySQL table (different from the currently bound table) to add the items to the combobox. Is this at all possible ?
If not - how can I create an empty datagrid and add two data sources to it, with one for the combobox? How do I then go about to save edits in the datagridview to one data source?

Regards

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